Automatically-closing door for banks



Jan. 15, 1929 E. DABROWSKI AUTOMATICALLY (iLOSING DOOR FOR BANKS Filed March 10, 1928 III will INVENTOR. l g ze @bmki Patented Jan. 15, 1929.

UNITED STATES EITGENE IDAFROWSKI, OF ST. JAMES, NEW YORK..

AUTOMATICALLY-CLOSTNG DOOR FOB BANKS.

Application filed March 10, 1928. Serial No. 280,717.

This invention relates generally to doors,

and has more particular reference to automatically closing doors for banks and similar institutions.

The invention has for an object the provision of a device of the class mentioned which is of simple durable construction, desirable and efficient in action, and which can be manufactured and sold at a reasonable cost.

In banks and institutions dealing in valuables, the possibility of robbery and hold-up is always present. This invention is intended for such institutions, and consists of a means for automatically closing the doors of the institution upon the pressing of a button by any person within the building. Many of these buttons may be arranged at various places in easy reach of the employees and oflicials of the said premises. In case of hold-up and robbery any one of the buttons may be pressed to automatically close the doors, and prevent the escape of the bandits. The invention is applicable to both hinged and sliding doors.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the ap ended claims in which the various novel eatures of the invention are more particularly set forth.

Referring to the accompanying drawing, forming a material part of this disclosure:

Fig. 1 is a fragmentary perspective view of the interior of a bank having doors constructed according to this invention.

Fig. 2 is a fragmentary vertical view, partly shown in section, of one of the doors, looking in the direction of the line 22 of Fig. 1.

Fig. 3 is a fragmentary vertical front detail view of the hinge construction of the door.

Fig. 4 is a fragmentary horizontal sectional View, taken on the line H of Fig. 2. T

Fig. 5 is a fragmentary vertical sectional view, taken on the line 5-5 of Fig. 4.

Fig. 6 is a fragmentary vertical front view, partly shown in section of another door, this door being a sliding type door, with the same device applied thereto, looking in the direction of the line 6-6 of Fig. 1.

Fig. 7 is a fragmentary horizontal sec-- tional view, taken on the line 7-7 of Fig. 6.

Fig. 8 is a detail face View of a modified form of gear, similar to the large gear shown in Fig. 4. i

The reference numeral 10 indicates the walls of a bank provided with hinged type doors 11, and outer doors 11 and sliding type doors 12 and outer doors 12*. Within the walls there is a counter 13 provided with customary protecting bars 14.

Each door member 11 and 11 has one of its edges hingedly connected with the wall .10 or other support by means of a flange 15 integral with shafts 16 and pivotally connected to a second flange 17 attached tothe wall 10. V i

The shaft 16 adjacent the floor 18, extends into a cavity 19 within the floor. A gear 20 is attached to the rod, and meshes with a pinion 21 on a shaft 22 rotatively mounted and provided with a second gear 23 meshing with a rack 24 connected with the core of solenoid 25i fThe gear 20 is formed with a plurality of apertures 26 on one of its circular elements, and a second solenoid 27 is fixedly mounted and has a pointed core 28 aligned with one of the apertures 26. The solenoid 25 is wired in a circuit including push buttons 29' so that upon depression of any one of the buttons 29 the solenoid will be energized to draw its core inwards. The solenoid 27 is wired in a circuit including switches 30 so that upon closing of any one of the switches the solenoid 27 will be energized to thrust its core outwards. 1

Each door member 12 isprovided with a lug 31 connected with a flexible member 32 wound about shaft 16' mounted in a cavity 19 within the floor. A gear 20 is attached to the shaft 16, and connects with a pinion 21, gear 23, rack 24 and a solenoid 25 as before described also a solenoid 27 is similarly related to gear 20 as before described, and solenoids 25 and 27 are wired as before described.

In operation, the doors 11, 11" and 12, 12 being assumed in completely opened condition, one of the buttons 29 is manually pressed inwards to close the circuit of the solenoids 25. The solenoids 25 upon being energized move their cores inwards, thus moving the racks 24, which motion is comshaft 16 turns towards the left referring to Fig. 2, the door 11 turns to close, and hke wise as the shaft 16 turns counterclockwise referring to Fig. 6, the door 12 slidably moves to close.

hen the doors are closed to an extent so that it is impossible for a, person to squeeze thru, one of the switchesZiO is manually closed. This causes the solenoids 27 to become energized, and. moves cores .28 out wards into one of the apertures 260i the gear 29, as a means tor looking the doors against further opening. Thus persons or policemen can shoot .thru, the slightly opened doors at the bandits,

In Fig. 8 a modified form of gear has been: shown, referred to on the drawing by numeral 20'. The gear has a plurality of arcuate slots 31 and radial apertures, 82 extending fnom the periphery across the slots. Slots 33 may be placed; in the apertures 32 so as to divide the slots into sections. These pins may beplaced in eachraperture, 01' may be removed and placedlin every other aperture as a means for changing the number of sections the slots,aredividedin, as a means for allowing the gear 20' to slightly turn I when locked by core 28, sotha-t the door 11 may alsobe similarly moved. The door 12 may be manually, completely closed, but can not be opened further than determined by the gear, 20 and core 28.

While I have shown and described a pre ferred embodiment, of my invention, it is tobe understood that I do not limit myself to the precise construction herein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as defined in the appended claims.

Having thus described my invention What I claiinas new and desire to secure by United States Letters Patent is 1. In combination with a closable door, a shaft connected to close the door upou rotution, a gear formed with a plurality of apertures and attached on the shaft, means for rotating the said gear, and a means tor engaging a core within one of the apertures of the said gear for locking the door in par.- tially closed condition against further opening. i

2. In combination with a closable door, a shaft connected to close the door upon r0- tation, a gear formed with a plurality of apertures, attached to the shaft, a second shaft provided with a pinion meshing with the gear, and with a second gear, a solenoid having its core connected with a rack meshing withthe second gear, and a second solonoid having its core en 'ageable with one of the aperturesoi the lii st mentioned gears, for locking the door in partially closed condition against further opening.

In testimony whereof I have atlixed my signature.

EUGENE DABROVVSKI. 

